Abstract:In order to improve problems of single repair method and difficult to repair at room temperature for traditional self-healing polyurethane material, using self-made hydroxyl-terminated fluorinated polyol (FE-OH), polytetrahydrofuran glycol (PTMEG) as soft segment, isocyanate (IPDI) as hard segment, cystamine (CM) and 4-methylumbelliferone (4-MU) as chain extenders and end-capping agents, respectively, and polypyrrole-modified carbon nanometers (PPY/CNTs) as photothermal conversion conductive assistant, fluorine-containing polyurethane conductive elastomers(CFPU) that can be repaired by light and heat were prepared. The structure of CFPU was characterized by infrared spectroscopy (FT-IR), Raman spectroscopy (Raman), etc., the self-repair performance of CFPU was studied by optical microscope (OM), 3D profiler, etc., and the performance CFPU was studied by contact angle measuring instrument. Hydrophobic performance, the conductivity and physical and chemical responsiveness of CFPU were studied through digital multimeter (DMM) and electrochemical workstation. The results show that CFPUs have excellent self-healing properties under room temperature(25 oC) and different wavelengths light conditions; when the addition of PPY/CNTs is 25% (CFPU1), the mechanical properties and hydrophobicity of the material are the best and can show good temperature and chemical environment responsiveness. The material has potential applications in medical diagnosis, electronic skin and other fields.